http://www.dlsite.com/maniax/work/=/product_id/RJ102526.htmlThe time is the 21st century.
Sex education guidelines have changed with society.
To encourage people to be more liberal and procreate as soon as possible (for society’s future), students are taught from a very young age how to best achieve masturbation and sex.

http://www.dlsite.com/maniax/work/=/product_id/RJ162718.htmlI became the guardian of a slave girl was had been abused by her last owner. At first things were weird. She was naturally distrusting, but through communication we became friendly. A bond formed, and we went out together. I bought her clothes, she wore them. As time passed I began to fall in love with her. This game is about becoming intimate with a slave girl.